| 1 | ;;; comint.el --- general command interpreter in a window stuff |
| 2 | |
| 3 | ;; Copyright (C) 1988, 1990, 1992, 1993 Free Software Foundation, Inc. |
| 4 | |
| 5 | ;; Author: Olin Shivers <shivers@cs.cmu.edu> |
| 6 | ;; Keywords: processes |
| 7 | |
| 8 | ;; This file is part of GNU Emacs. |
| 9 | |
| 10 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
| 11 | ;; it under the terms of the GNU General Public License as published by |
| 12 | ;; the Free Software Foundation; either version 2, or (at your option) |
| 13 | ;; any later version. |
| 14 | |
| 15 | ;; GNU Emacs is distributed in the hope that it will be useful, |
| 16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | ;; GNU General Public License for more details. |
| 19 | |
| 20 | ;; You should have received a copy of the GNU General Public License |
| 21 | ;; along with GNU Emacs; see the file COPYING. If not, write to |
| 22 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| 23 | |
| 24 | ;;; Commentary: |
| 25 | |
| 26 | ;;; The changelog is at the end of this file. |
| 27 | |
| 28 | ;;; Please send me bug reports, bug fixes, and extensions, so that I can |
| 29 | ;;; merge them into the master source. |
| 30 | ;;; - Olin Shivers (shivers@cs.cmu.edu) |
| 31 | |
| 32 | ;;; This file defines a general command-interpreter-in-a-buffer package |
| 33 | ;;; (comint mode). The idea is that you can build specific process-in-a-buffer |
| 34 | ;;; modes on top of comint mode -- e.g., lisp, shell, scheme, T, soar, .... |
| 35 | ;;; This way, all these specific packages share a common base functionality, |
| 36 | ;;; and a common set of bindings, which makes them easier to use (and |
| 37 | ;;; saves code, implementation time, etc., etc.). |
| 38 | |
| 39 | ;;; Several packages are already defined using comint mode: |
| 40 | ;;; - shell.el defines a shell-in-a-buffer mode. |
| 41 | ;;; - cmulisp.el defines a simple lisp-in-a-buffer mode. |
| 42 | ;;; |
| 43 | ;;; - The file cmuscheme.el defines a scheme-in-a-buffer mode. |
| 44 | ;;; - The file tea.el tunes scheme and inferior-scheme modes for T. |
| 45 | ;;; - The file soar.el tunes lisp and inferior-lisp modes for Soar. |
| 46 | ;;; - cmutex.el defines tex and latex modes that invoke tex, latex, bibtex, |
| 47 | ;;; previewers, and printers from within emacs. |
| 48 | ;;; - background.el allows csh-like job control inside emacs. |
| 49 | ;;; It is pretty easy to make new derived modes for other processes. |
| 50 | |
| 51 | ;;; For documentation on the functionality provided by comint mode, and |
| 52 | ;;; the hooks available for customising it, see the comments below. |
| 53 | ;;; For further information on the standard derived modes (shell, |
| 54 | ;;; inferior-lisp, inferior-scheme, ...), see the relevant source files. |
| 55 | |
| 56 | ;;; For hints on converting existing process modes (e.g., tex-mode, |
| 57 | ;;; background, dbx, gdb, kermit, prolog, telnet) to use comint-mode |
| 58 | ;;; instead of shell-mode, see the notes at the end of this file. |
| 59 | |
| 60 | \f |
| 61 | ;;; Brief Command Documentation: |
| 62 | ;;;============================================================================ |
| 63 | ;;; Comint Mode Commands: (common to all derived modes, like shell & cmulisp |
| 64 | ;;; mode) |
| 65 | ;;; |
| 66 | ;;; m-p comint-previous-input Cycle backwards in input history |
| 67 | ;;; m-n comint-next-input Cycle forwards |
| 68 | ;;; m-r comint-previous-matching-input Previous input matching a regexp |
| 69 | ;;; m-s comint-next-matching-input Next input that matches |
| 70 | ;;; return comint-send-input |
| 71 | ;;; c-a comint-bol Beginning of line; skip prompt. |
| 72 | ;;; c-d comint-delchar-or-maybe-eof Delete char unless at end of buff. |
| 73 | ;;; c-c c-u comint-kill-input ^u |
| 74 | ;;; c-c c-w backward-kill-word ^w |
| 75 | ;;; c-c c-c comint-interrupt-subjob ^c |
| 76 | ;;; c-c c-z comint-stop-subjob ^z |
| 77 | ;;; c-c c-\ comint-quit-subjob ^\ |
| 78 | ;;; c-c c-o comint-kill-output Delete last batch of process output |
| 79 | ;;; c-c c-r comint-show-output Show last batch of process output |
| 80 | ;;; |
| 81 | ;;; Not bound by default in comint-mode |
| 82 | ;;; send-invisible Read a line w/o echo, and send to proc |
| 83 | ;;; (These are bound in shell-mode) |
| 84 | ;;; comint-dynamic-complete Complete filename at point. |
| 85 | ;;; comint-dynamic-list-completions List completions in help buffer. |
| 86 | ;;; comint-replace-by-expanded-filename Expand and complete filename at point; |
| 87 | ;;; replace with expanded/completed name. |
| 88 | ;;; comint-kill-subjob No mercy. |
| 89 | ;;; comint-continue-subjob Send CONT signal to buffer's process |
| 90 | ;;; group. Useful if you accidentally |
| 91 | ;;; suspend your process (with C-c C-z). |
| 92 | ;;; |
| 93 | ;;; These used to be bound for RMS -- I prefer the input history stuff, |
| 94 | ;;; but you might like 'em. |
| 95 | ;;; m-P comint-msearch-input Search backwards for prompt |
| 96 | ;;; m-N comint-psearch-input Search forwards for prompt |
| 97 | ;;; C-cR comint-msearch-input-matching Search backwards for prompt & string |
| 98 | |
| 99 | ;;; comint-mode-hook is the comint mode hook. Basically for your keybindings. |
| 100 | ;;; comint-load-hook is run after loading in this package. |
| 101 | |
| 102 | ;;; Code: |
| 103 | |
| 104 | (defconst comint-version "2.03") |
| 105 | |
| 106 | (require 'ring) |
| 107 | \f |
| 108 | ;;; Buffer Local Variables: |
| 109 | ;;;============================================================================ |
| 110 | ;;; Comint mode buffer local variables: |
| 111 | ;;; comint-prompt-regexp - string comint-bol uses to match prompt. |
| 112 | ;;; comint-last-input-start - marker Handy if inferior always echos |
| 113 | ;;; comint-last-input-end - marker For comint-kill-output command |
| 114 | ;;; comint-input-ring-size - integer For the input history |
| 115 | ;;; comint-input-ring - ring mechanism |
| 116 | ;;; comint-input-ring-index - number ... |
| 117 | ;;; comint-last-input-match - string ... |
| 118 | ;;; comint-get-old-input - function Hooks for specific |
| 119 | ;;; comint-input-sentinel - function process-in-a-buffer |
| 120 | ;;; comint-input-filter - function modes. |
| 121 | ;;; comint-input-send - function |
| 122 | ;;; comint-eol-on-send - boolean |
| 123 | ;;; comint-process-echoes - boolean |
| 124 | |
| 125 | (defvar comint-prompt-regexp "^" |
| 126 | "Regexp to recognise prompts in the inferior process. |
| 127 | Defaults to \"^\", the null string at BOL. |
| 128 | |
| 129 | Good choices: |
| 130 | Canonical Lisp: \"^[^> ]*>+:? *\" (Lucid, franz, kcl, T, cscheme, oaklisp) |
| 131 | Lucid Common Lisp: \"^\\\\(>\\\\|\\\\(->\\\\)+\\\\) *\" |
| 132 | franz: \"^\\\\(->\\\\|<[0-9]*>:\\\\) *\" |
| 133 | kcl: \"^>+ *\" |
| 134 | shell: \"^[^#$%>]*[#$%>] *\" |
| 135 | T: \"^>+ *\" |
| 136 | |
| 137 | This is a good thing to set in mode hooks.") |
| 138 | |
| 139 | (defvar comint-input-ring-size 30 |
| 140 | "Size of input history ring.") |
| 141 | |
| 142 | (defvar comint-process-echoes nil |
| 143 | "*If non-nil, assume that the subprocess echoes any input. |
| 144 | If so, delete one copy of the input so that only one copy eventually |
| 145 | appears in the buffer. |
| 146 | |
| 147 | This variable is buffer-local.") |
| 148 | |
| 149 | ;;; Here are the per-interpreter hooks. |
| 150 | (defvar comint-get-old-input (function comint-get-old-input-default) |
| 151 | "Function that submits old text in comint mode. |
| 152 | This function is called when return is typed while the point is in old text. |
| 153 | It returns the text to be submitted as process input. The default is |
| 154 | `comint-get-old-input-default', which grabs the current line, and strips off |
| 155 | leading text matching `comint-prompt-regexp'.") |
| 156 | |
| 157 | (defvar comint-input-sentinel (function ignore) |
| 158 | "Called on each input submitted to comint mode process by `comint-send-input'. |
| 159 | Thus it can, for instance, track cd/pushd/popd commands issued to the csh.") |
| 160 | |
| 161 | (defvar comint-input-filter |
| 162 | (function (lambda (str) (not (string-match "\\`\\s *\\'" str)))) |
| 163 | "Predicate for filtering additions to input history. |
| 164 | Only inputs answering true to this function are saved on the input |
| 165 | history list. Default is to save anything that isn't all whitespace") |
| 166 | |
| 167 | (defvar comint-input-sender (function comint-simple-send) |
| 168 | "Function to actually send to PROCESS the STRING submitted by user. |
| 169 | Usually this is just `comint-simple-send', but if your mode needs to |
| 170 | massage the input string, put a different function here. |
| 171 | `comint-simple-send' just sends the string plus a newline. |
| 172 | This is called from the user command `comint-send-input'.") |
| 173 | |
| 174 | (defvar comint-eol-on-send t |
| 175 | "*Non-nil means go to the end of the line before sending input to process. |
| 176 | See `comint-send-input'.") |
| 177 | |
| 178 | (defvar comint-mode-hook '() |
| 179 | "Called upon entry into comint-mode |
| 180 | This is run before the process is cranked up.") |
| 181 | |
| 182 | (defvar comint-exec-hook '() |
| 183 | "Called each time a process is exec'd by `comint-exec'. |
| 184 | This is called after the process is cranked up. It is useful for things that |
| 185 | must be done each time a process is executed in a comint mode buffer (e.g., |
| 186 | `(process-kill-without-query)'). In contrast, the `comint-mode-hook' is only |
| 187 | executed once when the buffer is created.") |
| 188 | |
| 189 | (defvar comint-mode-map nil) |
| 190 | |
| 191 | (defvar comint-ptyp t |
| 192 | "True if communications via pty; false if by pipe. Buffer local. |
| 193 | This is to work around a bug in Emacs process signalling.") |
| 194 | |
| 195 | ;;(defvar comint-last-input-match "" |
| 196 | ;; "Last string searched for by comint input history search, for defaulting. |
| 197 | ;;Buffer local variable.") |
| 198 | |
| 199 | (defvar comint-input-ring nil) |
| 200 | (defvar comint-last-input-start) |
| 201 | (defvar comint-last-input-end) |
| 202 | (defvar comint-input-ring-index) |
| 203 | (put 'comint-input-ring 'permanent-local t) |
| 204 | (put 'comint-ptyp 'permanent-local t) |
| 205 | |
| 206 | (defun comint-mode () |
| 207 | "Major mode for interacting with an inferior interpreter. |
| 208 | Interpreter name is same as buffer name, sans the asterisks. |
| 209 | Return at end of buffer sends line as input. |
| 210 | Return not at end copies rest of line to end and sends it. |
| 211 | Setting variable `comint-eol-on-send' means jump to the end of the line |
| 212 | before submitting new input. |
| 213 | |
| 214 | This mode is typically customised to create Inferior Lisp mode, |
| 215 | Shell mode, etc. This can be done by setting the hooks |
| 216 | `comint-input-sentinel', `comint-input-filter', `comint-input-sender' and |
| 217 | `comint-get-old-input' to appropriate functions, and the variable |
| 218 | `comint-prompt-regexp' to the appropriate regular expression. |
| 219 | |
| 220 | An input history is maintained of size `comint-input-ring-size', and |
| 221 | can be accessed with the commands \\[comint-next-input] and \\[comint-previous-input]. |
| 222 | Commands with no default key bindings include `send-invisible', |
| 223 | `comint-dynamic-complete', and `comint-list-dynamic-completions'. |
| 224 | |
| 225 | If you accidentally suspend your process, use \\[comint-continue-subjob] |
| 226 | to continue it. |
| 227 | |
| 228 | \\{comint-mode-map} |
| 229 | |
| 230 | Entry to this mode runs the hooks on comint-mode-hook" |
| 231 | (interactive) |
| 232 | ;; Do not remove this. All major modes must do this. |
| 233 | (kill-all-local-variables) |
| 234 | (setq major-mode 'comint-mode) |
| 235 | (setq mode-name "Comint") |
| 236 | (setq mode-line-process '(": %s")) |
| 237 | (use-local-map comint-mode-map) |
| 238 | (make-local-variable 'comint-last-input-start) |
| 239 | (setq comint-last-input-start (make-marker)) |
| 240 | (make-local-variable 'comint-last-input-end) |
| 241 | (setq comint-last-input-end (make-marker)) |
| 242 | ;;; (make-local-variable 'comint-last-input-match) |
| 243 | ;;; (setq comint-last-input-match "") |
| 244 | (make-local-variable 'comint-prompt-regexp) ; Don't set; default |
| 245 | (make-local-variable 'comint-input-ring-size) ; ...to global val. |
| 246 | (make-local-variable 'comint-input-ring) |
| 247 | (make-local-variable 'comint-input-ring-index) |
| 248 | (setq comint-input-ring-index 0) |
| 249 | (make-local-variable 'comint-get-old-input) |
| 250 | (make-local-variable 'comint-input-sentinel) |
| 251 | (make-local-variable 'comint-input-filter) |
| 252 | (make-local-variable 'comint-input-sender) |
| 253 | (make-local-variable 'comint-eol-on-send) |
| 254 | (make-local-variable 'comint-ptyp) |
| 255 | (make-local-variable 'comint-exec-hook) |
| 256 | (make-local-variable 'comint-process-echoes) |
| 257 | (run-hooks 'comint-mode-hook) |
| 258 | (or comint-input-ring |
| 259 | (setq comint-input-ring (make-ring comint-input-ring-size)))) |
| 260 | |
| 261 | (if comint-mode-map |
| 262 | nil |
| 263 | (setq comint-mode-map (make-sparse-keymap)) |
| 264 | (define-key comint-mode-map "\ep" 'comint-previous-input) |
| 265 | (define-key comint-mode-map "\en" 'comint-next-input) |
| 266 | (define-key comint-mode-map "\er" 'comint-previous-matching-input) |
| 267 | (define-key comint-mode-map "\es" 'comint-next-matching-input) |
| 268 | (define-key comint-mode-map "\C-m" 'comint-send-input) |
| 269 | (define-key comint-mode-map "\C-d" 'comint-delchar-or-maybe-eof) |
| 270 | (define-key comint-mode-map "\C-a" 'comint-bol) |
| 271 | (define-key comint-mode-map "\C-c\C-u" 'comint-kill-input) |
| 272 | (define-key comint-mode-map "\C-c\C-w" 'backward-kill-word) |
| 273 | (define-key comint-mode-map "\C-c\C-c" 'comint-interrupt-subjob) |
| 274 | (define-key comint-mode-map "\C-c\C-z" 'comint-stop-subjob) |
| 275 | (define-key comint-mode-map "\C-c\C-\\" 'comint-quit-subjob) |
| 276 | (define-key comint-mode-map "\C-c\C-o" 'comint-kill-output) |
| 277 | (define-key comint-mode-map "\C-c\C-r" 'comint-show-output) |
| 278 | ;;; prompt-search commands commented out 3/90 -Olin |
| 279 | ; (define-key comint-mode-map "\eP" 'comint-msearch-input) |
| 280 | ; (define-key comint-mode-map "\eN" 'comint-psearch-input) |
| 281 | ; (define-key comint-mode-map "\C-cR" 'comint-msearch-input-matching) |
| 282 | (define-key comint-mode-map "\C-c\C-n" 'comint-next-prompt) |
| 283 | (define-key comint-mode-map "\C-c\C-p" 'comint-prev-prompt) |
| 284 | (define-key comint-mode-map "\C-c\C-d" 'comint-send-eof) |
| 285 | (define-key comint-mode-map "\C-c\C-y" 'comint-previous-input) ;v18 binding |
| 286 | ) |
| 287 | |
| 288 | |
| 289 | ;;; This function is used to make a full copy of the comint mode map, |
| 290 | ;;; so that client modes won't interfere with each other. This function |
| 291 | ;;; isn't necessary in emacs 18.5x, but we keep it around for 18.4x versions. |
| 292 | (defun full-copy-sparse-keymap (km) |
| 293 | "Recursively copy the sparse keymap KM." |
| 294 | (cond ((consp km) |
| 295 | (cons (full-copy-sparse-keymap (car km)) |
| 296 | (full-copy-sparse-keymap (cdr km)))) |
| 297 | (t km))) |
| 298 | |
| 299 | (defun comint-check-proc (buffer) |
| 300 | "True if there is a living process associated w/buffer BUFFER. |
| 301 | Living means the status is `run' or `stop'. |
| 302 | BUFFER can be either a buffer or the name of one." |
| 303 | (let ((proc (get-buffer-process buffer))) |
| 304 | (and proc (memq (process-status proc) '(run stop))))) |
| 305 | |
| 306 | ;;; Note that this guy, unlike shell.el's make-shell, barfs if you pass it () |
| 307 | ;;; for the second argument (program). |
| 308 | ;;;###autoload |
| 309 | (defun make-comint (name program &optional startfile &rest switches) |
| 310 | "Make a comint process NAME in a buffer, running PROGRAM. |
| 311 | The name of the buffer is made by surrounding NAME with `*'s. |
| 312 | If there is already a running process in that buffer, it is not restarted. |
| 313 | Optional third arg STARTFILE is the name of a file to send the contents of to |
| 314 | the process. Any more args are arguments to PROGRAM." |
| 315 | (let ((buffer (get-buffer-create (concat "*" name "*")))) |
| 316 | ;; If no process, or nuked process, crank up a new one and put buffer in |
| 317 | ;; comint mode. Otherwise, leave buffer and existing process alone. |
| 318 | (cond ((not (comint-check-proc buffer)) |
| 319 | (save-excursion |
| 320 | (set-buffer buffer) |
| 321 | (comint-mode)) ; Install local vars, mode, keymap, ... |
| 322 | (comint-exec buffer name program startfile switches))) |
| 323 | buffer)) |
| 324 | |
| 325 | (defun comint-exec (buffer name command startfile switches) |
| 326 | "Start up a process in buffer BUFFER for comint modes. |
| 327 | Blasts any old process running in the buffer. Doesn't set the buffer mode. |
| 328 | You can use this to cheaply run a series of processes in the same comint |
| 329 | buffer. The hook `comint-exec-hook' is run after each exec." |
| 330 | (save-excursion |
| 331 | (set-buffer buffer) |
| 332 | (let ((proc (get-buffer-process buffer))) ; Blast any old process. |
| 333 | (if proc (delete-process proc))) |
| 334 | ;; Crank up a new process |
| 335 | (let ((proc (comint-exec-1 name buffer command switches))) |
| 336 | (set-process-filter proc 'comint-filter) |
| 337 | (make-local-variable 'comint-ptyp) |
| 338 | (setq comint-ptyp process-connection-type) ; T if pty, NIL if pipe. |
| 339 | ;; Jump to the end, and set the process mark. |
| 340 | (goto-char (point-max)) |
| 341 | (set-marker (process-mark proc) (point)) |
| 342 | ;; Feed it the startfile. |
| 343 | (cond (startfile |
| 344 | ;;This is guaranteed to wait long enough |
| 345 | ;;but has bad results if the comint does not prompt at all |
| 346 | ;; (while (= size (buffer-size)) |
| 347 | ;; (sleep-for 1)) |
| 348 | ;;I hope 1 second is enough! |
| 349 | (sleep-for 1) |
| 350 | (goto-char (point-max)) |
| 351 | (insert-file-contents startfile) |
| 352 | (setq startfile (buffer-substring (point) (point-max))) |
| 353 | (delete-region (point) (point-max)) |
| 354 | (comint-send-string proc startfile))) |
| 355 | (run-hooks 'comint-exec-hook) |
| 356 | buffer))) |
| 357 | |
| 358 | ;;; This auxiliary function cranks up the process for comint-exec in |
| 359 | ;;; the appropriate environment. |
| 360 | |
| 361 | (defun comint-exec-1 (name buffer command switches) |
| 362 | (let ((process-environment |
| 363 | (comint-update-env process-environment |
| 364 | (list (format "TERMCAP=emacs:co#%d:tc=unknown" |
| 365 | (frame-width)) |
| 366 | "TERM=emacs" |
| 367 | "EMACS=t")))) |
| 368 | (apply 'start-process name buffer command switches))) |
| 369 | |
| 370 | |
| 371 | |
| 372 | ;; This is just (append new old-env) that compresses out shadowed entries. |
| 373 | ;; It's also pretty ugly, mostly due to lisp's horrible iteration structures. |
| 374 | (defun comint-update-env (old-env new) |
| 375 | (let ((ans (reverse new)) |
| 376 | (vars (mapcar (function (lambda (vv) |
| 377 | (and (string-match "^[^=]*=" vv) |
| 378 | (substring vv 0 (match-end 0))))) |
| 379 | new))) |
| 380 | (while old-env |
| 381 | (let* ((vv (car old-env)) ; vv is var=value |
| 382 | (var (and (string-match "^[^=]*=" vv) |
| 383 | (substring vv 0 (match-end 0))))) |
| 384 | (setq old-env (cdr old-env)) |
| 385 | (cond ((not (and var (member var vars))) |
| 386 | (if var (setq var (cons var vars))) |
| 387 | (setq ans (cons vv ans)))))) |
| 388 | (nreverse ans))) |
| 389 | |
| 390 | \f |
| 391 | ;;; Input history retrieval commands |
| 392 | ;;; M-p -- previous input M-n -- next input |
| 393 | ;;; M-C-r -- previous input matching |
| 394 | ;;; =========================================================================== |
| 395 | |
| 396 | (defun comint-previous-input (arg) |
| 397 | "Cycle backwards through input history." |
| 398 | (interactive "*p") |
| 399 | (let ((len (ring-length comint-input-ring))) |
| 400 | (cond ((<= len 0) |
| 401 | (message "Empty input ring") |
| 402 | (ding)) |
| 403 | ((not (comint-after-pmark-p)) |
| 404 | (message "Not after process mark") |
| 405 | (ding)) |
| 406 | (t |
| 407 | (delete-region (point) |
| 408 | (process-mark (get-buffer-process (current-buffer)))) |
| 409 | ;; Initialize the index on the first use of this command |
| 410 | ;; so that the first M-p gets index 0, and the first M-n gets |
| 411 | ;; index -1. |
| 412 | (if (null comint-input-ring-index) |
| 413 | (setq comint-input-ring-index |
| 414 | (if (> arg 0) -1 |
| 415 | (if (< arg 0) 1 0)))) |
| 416 | (setq comint-input-ring-index |
| 417 | (ring-mod (+ comint-input-ring-index arg) len)) |
| 418 | (message "%d" (1+ comint-input-ring-index)) |
| 419 | (insert (ring-ref comint-input-ring comint-input-ring-index)))))) |
| 420 | |
| 421 | (defun comint-next-input (arg) |
| 422 | "Cycle forwards through input history." |
| 423 | (interactive "*p") |
| 424 | (comint-previous-input (- arg))) |
| 425 | |
| 426 | (defun comint-previous-matching-input (regexp arg) |
| 427 | "Search backwards through input history for match for REGEXP. |
| 428 | \(Previous history elements are earlier commands.) |
| 429 | With prefix argument N, search for Nth previous match. |
| 430 | If N is negative, find the next or Nth next match." |
| 431 | (interactive |
| 432 | (let* ((minibuffer-history-sexp-flag nil) |
| 433 | ;; Don't clobber this. |
| 434 | (last-command last-command) |
| 435 | (regexp (read-from-minibuffer "Previous input matching (regexp): " |
| 436 | nil |
| 437 | minibuffer-local-map |
| 438 | nil |
| 439 | 'minibuffer-history-search-history))) |
| 440 | (list (if (string= regexp "") |
| 441 | (setcar minibuffer-history-search-history |
| 442 | (nth 1 minibuffer-history-search-history)) |
| 443 | regexp) |
| 444 | (prefix-numeric-value current-prefix-arg)))) |
| 445 | (if (null comint-input-ring-index) |
| 446 | (setq comint-input-ring-index -1)) |
| 447 | (let* ((len (ring-length comint-input-ring)) |
| 448 | (motion (if (> arg 0) 1 -1)) |
| 449 | (n comint-input-ring-index)) |
| 450 | ;; Do the whole search as many times as the argument says. |
| 451 | (while (/= arg 0) |
| 452 | (let ((prev n)) |
| 453 | ;; Step once. |
| 454 | (setq n (ring-mod (+ n motion) len)) |
| 455 | ;; If we haven't reached a match, step some more. |
| 456 | (while (and (< n len) |
| 457 | (not (string-match regexp (ring-ref comint-input-ring n)))) |
| 458 | (setq n (ring-mod (+ n motion) len)) |
| 459 | ;; If we have gone all the way around in this search, error. |
| 460 | (if (= n prev) |
| 461 | (error "Not found")))) |
| 462 | (setq arg (if (> arg 0) (1- arg) (1+ arg)))) |
| 463 | ;; Now that we know which ring element to use, |
| 464 | ;; substitute that for the current input. |
| 465 | (comint-previous-input (- n comint-input-ring-index)))) |
| 466 | |
| 467 | (defun comint-next-matching-input (regexp arg) |
| 468 | "Search forwards through input history for match for REGEXP. |
| 469 | \(Later history elements are more recent commands.) |
| 470 | With prefix argument N, search for Nth following match. |
| 471 | If N is negative, find the previous or Nth previous match." |
| 472 | (interactive |
| 473 | (let ((minibuffer-history-sexp-flag nil) |
| 474 | ;; Don't clobber this. |
| 475 | (last-command last-command) |
| 476 | (regexp (read-from-minibuffer "Previous input matching (regexp): " |
| 477 | nil |
| 478 | minibuffer-local-map |
| 479 | nil |
| 480 | 'minibuffer-history-search-history))) |
| 481 | (list (if (string= regexp "") |
| 482 | (setcar minibuffer-history-search-history |
| 483 | (nth 1 minibuffer-history-search-history)) |
| 484 | regexp) |
| 485 | (prefix-numeric-value current-prefix-arg)))) |
| 486 | (comint-previous-matching-input regexp (- arg))) |
| 487 | \f |
| 488 | ;;; These next three commands are alternatives to the input history commands |
| 489 | ;;; They search through the process buffer |
| 490 | ;;; text looking for occurrences of the prompt. Bound to M-P, M-N, and C-c R |
| 491 | ;;; (uppercase P, N, and R) for now. Try'em out. Go with what you like... |
| 492 | |
| 493 | ;;; comint-msearch-input-matching prompts for a string, not a regexp. |
| 494 | ;;; This could be considered to be the wrong thing. I decided to keep it |
| 495 | ;;; simple, and not make the user worry about regexps. This, of course, |
| 496 | ;;; limits functionality. |
| 497 | |
| 498 | ;;; These commands were deemed non-winning and have been commented out. |
| 499 | ;;; Feel free to re-enable them if you like. -Olin 3/91 |
| 500 | |
| 501 | ;(defun comint-psearch-input () |
| 502 | ; "Search forwards for next occurrence of prompt and skip to end of line. |
| 503 | ;\(prompt is anything matching regexp comint-prompt-regexp)" |
| 504 | ; (interactive) |
| 505 | ; (if (re-search-forward comint-prompt-regexp (point-max) t) |
| 506 | ; (end-of-line) |
| 507 | ; (error "No occurrence of prompt found"))) |
| 508 | ; |
| 509 | ;(defun comint-msearch-input () |
| 510 | ; "Search backwards for previous occurrence of prompt and skip to end of line. |
| 511 | ;Search starts from beginning of current line." |
| 512 | ; (interactive) |
| 513 | ; (let ((p (save-excursion |
| 514 | ; (beginning-of-line) |
| 515 | ; (cond ((re-search-backward comint-prompt-regexp (point-min) t) |
| 516 | ; (end-of-line) |
| 517 | ; (point)) |
| 518 | ; (t nil))))) |
| 519 | ; (if p (goto-char p) |
| 520 | ; (error "No occurrence of prompt found")))) |
| 521 | ; |
| 522 | ;(defun comint-msearch-input-matching (str) |
| 523 | ; "Search backwards for occurrence of prompt followed by STRING. |
| 524 | ;STRING is prompted for, and is NOT a regular expression." |
| 525 | ; (interactive (let ((s (read-from-minibuffer |
| 526 | ; (format "Command (default %s): " |
| 527 | ; comint-last-input-match)))) |
| 528 | ; (list (if (string= s "") comint-last-input-match s)))) |
| 529 | ;; (interactive "sCommand: ") |
| 530 | ; (setq comint-last-input-match str) ; update default |
| 531 | ; (let* ((r (concat comint-prompt-regexp (regexp-quote str))) |
| 532 | ; (p (save-excursion |
| 533 | ; (beginning-of-line) |
| 534 | ; (cond ((re-search-backward r (point-min) t) |
| 535 | ; (end-of-line) |
| 536 | ; (point)) |
| 537 | ; (t nil))))) |
| 538 | ; (if p (goto-char p) |
| 539 | ; (error "No match")))) |
| 540 | |
| 541 | ;;; |
| 542 | ;;; Similar input -- contributed by ccm and highly winning. |
| 543 | ;;; |
| 544 | ;;; Reenter input, removing back to the last insert point if it exists. |
| 545 | ;;; |
| 546 | ;;(defvar comint-last-similar-string "" |
| 547 | ;; "The string last used in a similar string search.") |
| 548 | |
| 549 | ;;(defun comint-previous-similar-input (arg) |
| 550 | ;; "Fetch the previous (older) input that matches the string typed so far. |
| 551 | ;;Successive repetitions find successively older matching inputs. |
| 552 | ;;A prefix argument serves as a repeat count; a negative argument |
| 553 | ;;fetches following (more recent) inputs." |
| 554 | ;; (interactive "p") |
| 555 | ;; (if (not (comint-after-pmark-p)) |
| 556 | ;; (error "Not after process mark")) |
| 557 | ;; (if (null comint-input-ring-index) |
| 558 | ;; (setq comint-input-ring-index |
| 559 | ;; (if (> arg 0) -1 |
| 560 | ;; (if (< arg 0) 1 0)))) |
| 561 | ;; (if (not (or (eq last-command 'comint-previous-similar-input) |
| 562 | ;; (eq last-command 'comint-next-similar-input))) |
| 563 | ;; (setq comint-last-similar-string |
| 564 | ;; (buffer-substring |
| 565 | ;; (process-mark (get-buffer-process (current-buffer))) |
| 566 | ;; (point)))) |
| 567 | ;; (let* ((size (length comint-last-similar-string)) |
| 568 | ;; (len (ring-length comint-input-ring)) |
| 569 | ;; (n (+ comint-input-ring-index arg)) |
| 570 | ;; entry) |
| 571 | ;; (while (and (< n len) |
| 572 | ;; (or (< (length (setq entry (ring-ref comint-input-ring n))) size) |
| 573 | ;; (not (equal comint-last-similar-string |
| 574 | ;; (substring entry 0 size))))) |
| 575 | ;; (setq n (+ n arg))) |
| 576 | ;; (cond ((< n len) |
| 577 | ;; (setq comint-input-ring-index n) |
| 578 | ;; (if (or (eq last-command 'comint-previous-similar-input) |
| 579 | ;; (eq last-command 'comint-next-similar-input)) |
| 580 | ;; (delete-region (mark) (point)) ; repeat |
| 581 | ;; (push-mark (point))) ; 1st time |
| 582 | ;; (insert (substring entry size))) |
| 583 | ;; (t (error "Not found"))) |
| 584 | ;; (message "%d" (1+ comint-input-ring-index)))) |
| 585 | |
| 586 | ;;(defun comint-next-similar-input (arg) |
| 587 | ;; "Fetch the next (newer) input that matches the string typed so far. |
| 588 | ;;Successive repetitions find successively newer matching inputs. |
| 589 | ;;A prefix argument serves as a repeat count; a negative argument |
| 590 | ;;fetches previous (older) inputs." |
| 591 | ;; (interactive "p") |
| 592 | ;; (comint-previous-similar-input (- arg))) |
| 593 | \f |
| 594 | (defun comint-send-input () |
| 595 | "Send input to process. |
| 596 | After the process output mark, sends all text from the process mark to |
| 597 | point as input to the process. Before the process output mark, calls value |
| 598 | of variable `comint-get-old-input' to retrieve old input, copies it to the |
| 599 | process mark, and sends it. If variable `comint-process-echoes' is nil, |
| 600 | a terminal newline is also inserted into the buffer and sent to the process |
| 601 | \(if it is non-nil, all text from the process mark to point is deleted, |
| 602 | since it is assumed the remote process will re-echo it). |
| 603 | |
| 604 | The value of variable `comint-input-sentinel' is called on the input |
| 605 | before sending it. The input is entered into the input history ring, |
| 606 | if the value of variable `comint-input-filter' returns non-nil when |
| 607 | called on the input. |
| 608 | |
| 609 | If variable `comint-eol-on-send' is non-nil, then point is moved to the |
| 610 | end of line before sending the input. |
| 611 | |
| 612 | `comint-get-old-input', `comint-input-sentinel', and `comint-input-filter' |
| 613 | are chosen according to the command interpreter running in the buffer. E.g., |
| 614 | If the interpreter is the csh, |
| 615 | comint-get-old-input is the default: take the current line, discard any |
| 616 | initial string matching regexp comint-prompt-regexp. |
| 617 | comint-input-sentinel monitors input for \"cd\", \"pushd\", and \"popd\" |
| 618 | commands. When it sees one, it cd's the buffer. |
| 619 | comint-input-filter is the default: returns T if the input isn't all white |
| 620 | space. |
| 621 | |
| 622 | If the comint is Lucid Common Lisp, |
| 623 | comint-get-old-input snarfs the sexp ending at point. |
| 624 | comint-input-sentinel does nothing. |
| 625 | comint-input-filter returns NIL if the input matches input-filter-regexp, |
| 626 | which matches (1) all whitespace (2) :a, :c, etc. |
| 627 | |
| 628 | Similarly for Soar, Scheme, etc." |
| 629 | (interactive) |
| 630 | ;; Note that the input string does not include its terminal newline. |
| 631 | (let ((proc (get-buffer-process (current-buffer)))) |
| 632 | (if (not proc) (error "Current buffer has no process") |
| 633 | (let* ((pmark (process-mark proc)) |
| 634 | (pmark-val (marker-position pmark)) |
| 635 | (input (if (>= (point) pmark-val) |
| 636 | (progn (if comint-eol-on-send (end-of-line)) |
| 637 | (buffer-substring pmark (point))) |
| 638 | (let ((copy (funcall comint-get-old-input))) |
| 639 | (goto-char pmark) |
| 640 | (insert copy) |
| 641 | copy)))) |
| 642 | (if comint-process-echoes |
| 643 | (delete-region pmark (point)) |
| 644 | (insert ?\n)) |
| 645 | (if (funcall comint-input-filter input) |
| 646 | (ring-insert comint-input-ring input)) |
| 647 | (funcall comint-input-sentinel input) |
| 648 | (funcall comint-input-sender proc input) |
| 649 | (setq comint-input-ring-index nil) |
| 650 | (set-marker comint-last-input-start pmark) |
| 651 | (set-marker comint-last-input-end (point)) |
| 652 | (set-marker (process-mark proc) (point)))))) |
| 653 | |
| 654 | ;; The sole purpose of using this filter for comint processes |
| 655 | ;; is to keep comint-last-input-end from moving forward |
| 656 | ;; when output is inserted. |
| 657 | (defun comint-filter (process string) |
| 658 | (let ((obuf (current-buffer)) |
| 659 | opoint obeg oend) |
| 660 | (set-buffer (process-buffer process)) |
| 661 | (setq opoint (point)) |
| 662 | (setq obeg (point-min)) |
| 663 | (setq oend (point-max)) |
| 664 | (let ((buffer-read-only nil) |
| 665 | (nchars (length string))) |
| 666 | (widen) |
| 667 | (goto-char (process-mark process)) |
| 668 | (if (<= (point) opoint) |
| 669 | (setq opoint (+ opoint nchars))) |
| 670 | ;; Insert after old_begv, but before old_zv. |
| 671 | (if (< (point) obeg) |
| 672 | (setq obeg (+ obeg nchars))) |
| 673 | (if (<= (point) oend) |
| 674 | (setq oend (+ oend nchars))) |
| 675 | |
| 676 | (insert-before-markers string) |
| 677 | ;; Don't insert initial prompt outside the top of the window. |
| 678 | (if (= (window-start (selected-window)) (point)) |
| 679 | (set-window-start (selected-window) (- (point) (length string)))) |
| 680 | |
| 681 | (and comint-last-input-end |
| 682 | (marker-buffer comint-last-input-end) |
| 683 | (= (point) comint-last-input-end) |
| 684 | (set-marker comint-last-input-end |
| 685 | (- comint-last-input-end nchars))) |
| 686 | (set-marker (process-mark process) (point) nil) |
| 687 | (force-mode-line-update)) |
| 688 | |
| 689 | (narrow-to-region obeg oend) |
| 690 | (goto-char opoint) |
| 691 | (set-buffer obuf))) |
| 692 | |
| 693 | (defun comint-get-old-input-default () |
| 694 | "Default for `comint-get-old-input'. |
| 695 | Take the current line, and discard any initial text matching |
| 696 | `comint-prompt-regexp'." |
| 697 | (save-excursion |
| 698 | (beginning-of-line) |
| 699 | (comint-skip-prompt) |
| 700 | (let ((beg (point))) |
| 701 | (end-of-line) |
| 702 | (buffer-substring beg (point))))) |
| 703 | |
| 704 | (defun comint-skip-prompt () |
| 705 | "Skip past the text matching regexp `comint-prompt-regexp'. |
| 706 | If this takes us past the end of the current line, don't skip at all." |
| 707 | (let ((eol (save-excursion (end-of-line) (point)))) |
| 708 | (if (and (looking-at comint-prompt-regexp) |
| 709 | (<= (match-end 0) eol)) |
| 710 | (goto-char (match-end 0))))) |
| 711 | |
| 712 | |
| 713 | (defun comint-after-pmark-p () |
| 714 | "Is point after the process output marker?" |
| 715 | ;; Since output could come into the buffer after we looked at the point |
| 716 | ;; but before we looked at the process marker's value, we explicitly |
| 717 | ;; serialise. This is just because I don't know whether or not emacs |
| 718 | ;; services input during execution of lisp commands. |
| 719 | (let ((proc-pos (marker-position |
| 720 | (process-mark (get-buffer-process (current-buffer)))))) |
| 721 | (<= proc-pos (point)))) |
| 722 | |
| 723 | (defun comint-simple-send (proc string) |
| 724 | "Default function for sending to PROC input STRING. |
| 725 | This just sends STRING plus a newline. To override this, |
| 726 | set the hook `comint-input-sender'." |
| 727 | (comint-send-string proc string) |
| 728 | (comint-send-string proc "\n")) |
| 729 | |
| 730 | (defun comint-bol (arg) |
| 731 | "Goes to the beginning of line, then skips past the prompt, if any. |
| 732 | If a prefix argument is given (\\[universal-argument]), then no prompt skip |
| 733 | -- go straight to column 0. |
| 734 | |
| 735 | The prompt skip is done by skipping text matching the regular expression |
| 736 | `comint-prompt-regexp', a buffer local variable. |
| 737 | |
| 738 | If you don't like this command, bind C-a to `beginning-of-line' |
| 739 | in your hook, `comint-mode-hook'." |
| 740 | (interactive "P") |
| 741 | (beginning-of-line) |
| 742 | (if (null arg) (comint-skip-prompt))) |
| 743 | |
| 744 | ;;; These two functions are for entering text you don't want echoed or |
| 745 | ;;; saved -- typically passwords to ftp, telnet, or somesuch. |
| 746 | ;;; Just enter m-x send-invisible and type in your line. |
| 747 | |
| 748 | (defun comint-read-noecho (prompt &optional stars) |
| 749 | "Read a single line of text from user without echoing, and return it. |
| 750 | Prompt with argument PROMPT, a string. Optional argument STARS causes |
| 751 | input to be echoed with '*' characters on the prompt line. Input ends with |
| 752 | RET, LFD, or ESC. DEL or C-h rubs out. C-u kills line. C-g aborts (if |
| 753 | `inhibit-quit' is set because e.g. this function was called from a process |
| 754 | filter and C-g is pressed, this function returns nil rather than a string). |
| 755 | |
| 756 | Note that the keystrokes comprising the text can still be recovered |
| 757 | \(temporarily) with \\[view-lossage]. This may be a security bug for some |
| 758 | applications." |
| 759 | (let ((ans "") |
| 760 | (c 0) |
| 761 | (echo-keystrokes 0) |
| 762 | (cursor-in-echo-area t) |
| 763 | (done nil)) |
| 764 | (while (not done) |
| 765 | (if stars |
| 766 | (message "%s%s" prompt (make-string (length ans) ?*)) |
| 767 | (message prompt)) |
| 768 | (setq c (read-char)) |
| 769 | (cond ((= c ?\C-g) |
| 770 | ;; This function may get called from a process filter, where |
| 771 | ;; inhibit-quit is set. In later versions of emacs read-char |
| 772 | ;; may clear quit-flag itself and return C-g. That would make |
| 773 | ;; it impossible to quit this loop in a simple way, so |
| 774 | ;; re-enable it here (for backward-compatibility the check for |
| 775 | ;; quit-flag below would still be necessary, so this is seems |
| 776 | ;; like the simplest way to do things). |
| 777 | (setq quit-flag t |
| 778 | done t)) |
| 779 | ((or (= c ?\r) (= c ?\n) (= c ?\e)) |
| 780 | (setq done t)) |
| 781 | ((= c ?\C-u) |
| 782 | (setq ans "")) |
| 783 | ((and (/= c ?\b) (/= c ?\177)) |
| 784 | (setq ans (concat ans (char-to-string c)))) |
| 785 | ((> (length ans) 0) |
| 786 | (setq ans (substring ans 0 -1))))) |
| 787 | (if quit-flag |
| 788 | ;; Emulate a true quit, except that we have to return a value. |
| 789 | (prog1 |
| 790 | (setq quit-flag nil) |
| 791 | (message "Quit") |
| 792 | (beep t)) |
| 793 | (message "") |
| 794 | ans))) |
| 795 | |
| 796 | (defun send-invisible (str) |
| 797 | "Read a string without echoing. |
| 798 | Then send it to the process running in the current buffer. A new-line |
| 799 | is additionally sent. String is not saved on comint input history list. |
| 800 | Security bug: your string can still be temporarily recovered with |
| 801 | \\[view-lossage]." |
| 802 | ; (interactive (list (comint-read-noecho "Enter non-echoed text"))) |
| 803 | (interactive "P") ; Defeat snooping via C-x esc |
| 804 | (let ((proc (get-buffer-process (current-buffer)))) |
| 805 | (if (not proc) (error "Current buffer has no process") |
| 806 | (comint-send-string proc |
| 807 | (if (stringp str) str |
| 808 | (comint-read-noecho "Non-echoed text: " t))) |
| 809 | (comint-send-string proc "\n")))) |
| 810 | |
| 811 | \f |
| 812 | ;;; Low-level process communication |
| 813 | |
| 814 | (defvar comint-input-chunk-size 512 |
| 815 | "*Long inputs are sent to comint processes in chunks of this size. |
| 816 | If your process is choking on big inputs, try lowering the value.") |
| 817 | |
| 818 | (defun comint-send-string (proc str) |
| 819 | "Send PROCESS the contents of STRING as input. |
| 820 | This is equivalent to `process-send-string', except that long input strings |
| 821 | are broken up into chunks of size `comint-input-chunk-size'. Processes |
| 822 | are given a chance to output between chunks. This can help prevent processes |
| 823 | from hanging when you send them long inputs on some OS's." |
| 824 | (let* ((len (length str)) |
| 825 | (i (min len comint-input-chunk-size))) |
| 826 | (process-send-string proc (substring str 0 i)) |
| 827 | (while (< i len) |
| 828 | (let ((next-i (+ i comint-input-chunk-size))) |
| 829 | (accept-process-output) |
| 830 | (process-send-string proc (substring str i (min len next-i))) |
| 831 | (setq i next-i))))) |
| 832 | |
| 833 | (defun comint-send-region (proc start end) |
| 834 | "Sends to PROC the region delimited by START and END. |
| 835 | This is a replacement for `process-send-region' that tries to keep |
| 836 | your process from hanging on long inputs. See `comint-send-string'." |
| 837 | (comint-send-string proc (buffer-substring start end))) |
| 838 | |
| 839 | \f |
| 840 | ;;; Random input hackage |
| 841 | |
| 842 | (defun comint-kill-output () |
| 843 | "Kill all output from interpreter since last input." |
| 844 | (interactive) |
| 845 | (let ((pmark (process-mark (get-buffer-process (current-buffer))))) |
| 846 | (kill-region comint-last-input-end pmark) |
| 847 | (goto-char pmark) |
| 848 | (insert "*** output flushed ***\n") |
| 849 | (set-marker pmark (point)))) |
| 850 | |
| 851 | (defun comint-show-output () |
| 852 | "Display start of this batch of interpreter output at top of window. |
| 853 | Also put cursor there." |
| 854 | (interactive) |
| 855 | (goto-char comint-last-input-end) |
| 856 | (backward-char) |
| 857 | (beginning-of-line) |
| 858 | (set-window-start (selected-window) (point)) |
| 859 | (end-of-line)) |
| 860 | |
| 861 | (defun comint-interrupt-subjob () |
| 862 | "Interrupt the current subjob." |
| 863 | (interactive) |
| 864 | (interrupt-process nil comint-ptyp)) |
| 865 | |
| 866 | (defun comint-kill-subjob () |
| 867 | "Send kill signal to the current subjob." |
| 868 | (interactive) |
| 869 | (kill-process nil comint-ptyp)) |
| 870 | |
| 871 | (defun comint-quit-subjob () |
| 872 | "Send quit signal to the current subjob." |
| 873 | (interactive) |
| 874 | (quit-process nil comint-ptyp)) |
| 875 | |
| 876 | (defun comint-stop-subjob () |
| 877 | "Stop the current subjob. |
| 878 | WARNING: if there is no current subjob, you can end up suspending |
| 879 | the top-level process running in the buffer. If you accidentally do |
| 880 | this, use \\[comint-continue-subjob] to resume the process. (This |
| 881 | is not a problem with most shells, since they ignore this signal.)" |
| 882 | (interactive) |
| 883 | (stop-process nil comint-ptyp)) |
| 884 | |
| 885 | (defun comint-continue-subjob () |
| 886 | "Send CONT signal to process buffer's process group. |
| 887 | Useful if you accidentally suspend the top-level process." |
| 888 | (interactive) |
| 889 | (continue-process nil comint-ptyp)) |
| 890 | |
| 891 | (defun comint-kill-input () |
| 892 | "Kill all text from last stuff output by interpreter to point." |
| 893 | (interactive) |
| 894 | (let* ((pmark (process-mark (get-buffer-process (current-buffer)))) |
| 895 | (p-pos (marker-position pmark))) |
| 896 | (if (> (point) p-pos) |
| 897 | (kill-region pmark (point))))) |
| 898 | |
| 899 | (defun comint-delchar-or-maybe-eof (arg) |
| 900 | "Delete ARG characters forward, or send an EOF to process if at end of buffer." |
| 901 | (interactive "p") |
| 902 | (if (eobp) |
| 903 | (process-send-eof) |
| 904 | (delete-char arg))) |
| 905 | |
| 906 | (defun comint-send-eof () |
| 907 | "Send an EOF to the current buffer's process." |
| 908 | (interactive) |
| 909 | (process-send-eof)) |
| 910 | |
| 911 | (defun comint-next-prompt (n) |
| 912 | "\ |
| 913 | Move to end of next prompt in the buffer (with prefix arg, Nth next). |
| 914 | See `comint-prompt-regexp'." |
| 915 | (interactive "p") |
| 916 | (re-search-forward comint-prompt-regexp nil nil n)) |
| 917 | |
| 918 | (defun comint-prev-prompt (n) |
| 919 | "\ |
| 920 | Move to end of previous prompt in the buffer (with prefix arg, Nth previous). |
| 921 | See `comint-prompt-regexp'." |
| 922 | (interactive "p") |
| 923 | (if (= (save-excursion (re-search-backward comint-prompt-regexp nil t) |
| 924 | (match-end 0)) |
| 925 | (point)) |
| 926 | (setq n (1+ n))) |
| 927 | (re-search-backward comint-prompt-regexp nil nil n) |
| 928 | (goto-char (match-end 0))) |
| 929 | \f |
| 930 | ;;; Support for source-file processing commands. |
| 931 | ;;;============================================================================ |
| 932 | ;;; Many command-interpreters (e.g., Lisp, Scheme, Soar) have |
| 933 | ;;; commands that process files of source text (e.g. loading or compiling |
| 934 | ;;; files). So the corresponding process-in-a-buffer modes have commands |
| 935 | ;;; for doing this (e.g., lisp-load-file). The functions below are useful |
| 936 | ;;; for defining these commands. |
| 937 | ;;; |
| 938 | ;;; Alas, these guys don't do exactly the right thing for Lisp, Scheme |
| 939 | ;;; and Soar, in that they don't know anything about file extensions. |
| 940 | ;;; So the compile/load interface gets the wrong default occasionally. |
| 941 | ;;; The load-file/compile-file default mechanism could be smarter -- it |
| 942 | ;;; doesn't know about the relationship between filename extensions and |
| 943 | ;;; whether the file is source or executable. If you compile foo.lisp |
| 944 | ;;; with compile-file, then the next load-file should use foo.bin for |
| 945 | ;;; the default, not foo.lisp. This is tricky to do right, particularly |
| 946 | ;;; because the extension for executable files varies so much (.o, .bin, |
| 947 | ;;; .lbin, .mo, .vo, .ao, ...). |
| 948 | |
| 949 | |
| 950 | ;;; COMINT-SOURCE-DEFAULT -- determines defaults for source-file processing |
| 951 | ;;; commands. |
| 952 | ;;; |
| 953 | ;;; COMINT-CHECK-SOURCE -- if FNAME is in a modified buffer, asks you if you |
| 954 | ;;; want to save the buffer before issuing any process requests to the command |
| 955 | ;;; interpreter. |
| 956 | ;;; |
| 957 | ;;; COMINT-GET-SOURCE -- used by the source-file processing commands to prompt |
| 958 | ;;; for the file to process. |
| 959 | |
| 960 | ;;; (COMINT-SOURCE-DEFAULT previous-dir/file source-modes) |
| 961 | ;;;============================================================================ |
| 962 | ;;; This function computes the defaults for the load-file and compile-file |
| 963 | ;;; commands for tea, soar, cmulisp, and cmuscheme modes. |
| 964 | ;;; |
| 965 | ;;; - PREVIOUS-DIR/FILE is a pair (directory . filename) from the last |
| 966 | ;;; source-file processing command. NIL if there hasn't been one yet. |
| 967 | ;;; - SOURCE-MODES is a list used to determine what buffers contain source |
| 968 | ;;; files: if the major mode of the buffer is in SOURCE-MODES, it's source. |
| 969 | ;;; Typically, (lisp-mode) or (scheme-mode). |
| 970 | ;;; |
| 971 | ;;; If the command is given while the cursor is inside a string, *and* |
| 972 | ;;; the string is an existing filename, *and* the filename is not a directory, |
| 973 | ;;; then the string is taken as default. This allows you to just position |
| 974 | ;;; your cursor over a string that's a filename and have it taken as default. |
| 975 | ;;; |
| 976 | ;;; If the command is given in a file buffer whose major mode is in |
| 977 | ;;; SOURCE-MODES, then the the filename is the default file, and the |
| 978 | ;;; file's directory is the default directory. |
| 979 | ;;; |
| 980 | ;;; If the buffer isn't a source file buffer (e.g., it's the process buffer), |
| 981 | ;;; then the default directory & file are what was used in the last source-file |
| 982 | ;;; processing command (i.e., PREVIOUS-DIR/FILE). If this is the first time |
| 983 | ;;; the command has been run (PREVIOUS-DIR/FILE is nil), the default directory |
| 984 | ;;; is the cwd, with no default file. (\"no default file\" = nil) |
| 985 | ;;; |
| 986 | ;;; SOURCE-REGEXP is typically going to be something like (tea-mode) |
| 987 | ;;; for T programs, (lisp-mode) for Lisp programs, (soar-mode lisp-mode) |
| 988 | ;;; for Soar programs, etc. |
| 989 | ;;; |
| 990 | ;;; The function returns a pair: (default-directory . default-file). |
| 991 | |
| 992 | (defun comint-source-default (previous-dir/file source-modes) |
| 993 | (cond ((and buffer-file-name (memq major-mode source-modes)) |
| 994 | (cons (file-name-directory buffer-file-name) |
| 995 | (file-name-nondirectory buffer-file-name))) |
| 996 | (previous-dir/file) |
| 997 | (t |
| 998 | (cons default-directory nil)))) |
| 999 | |
| 1000 | |
| 1001 | ;;; (COMINT-CHECK-SOURCE fname) |
| 1002 | ;;;============================================================================ |
| 1003 | ;;; Prior to loading or compiling (or otherwise processing) a file (in the CMU |
| 1004 | ;;; process-in-a-buffer modes), this function can be called on the filename. |
| 1005 | ;;; If the file is loaded into a buffer, and the buffer is modified, the user |
| 1006 | ;;; is queried to see if he wants to save the buffer before proceeding with |
| 1007 | ;;; the load or compile. |
| 1008 | |
| 1009 | (defun comint-check-source (fname) |
| 1010 | (let ((buff (get-file-buffer fname))) |
| 1011 | (if (and buff |
| 1012 | (buffer-modified-p buff) |
| 1013 | (y-or-n-p (format "Save buffer %s first? " |
| 1014 | (buffer-name buff)))) |
| 1015 | ;; save BUFF. |
| 1016 | (let ((old-buffer (current-buffer))) |
| 1017 | (set-buffer buff) |
| 1018 | (save-buffer) |
| 1019 | (set-buffer old-buffer))))) |
| 1020 | |
| 1021 | |
| 1022 | ;;; (COMINT-GET-SOURCE prompt prev-dir/file source-modes mustmatch-p) |
| 1023 | ;;;============================================================================ |
| 1024 | ;;; COMINT-GET-SOURCE is used to prompt for filenames in command-interpreter |
| 1025 | ;;; commands that process source files (like loading or compiling a file). |
| 1026 | ;;; It prompts for the filename, provides a default, if there is one, |
| 1027 | ;;; and returns the result filename. |
| 1028 | ;;; |
| 1029 | ;;; See COMINT-SOURCE-DEFAULT for more on determining defaults. |
| 1030 | ;;; |
| 1031 | ;;; PROMPT is the prompt string. PREV-DIR/FILE is the (directory . file) pair |
| 1032 | ;;; from the last source processing command. SOURCE-MODES is a list of major |
| 1033 | ;;; modes used to determine what file buffers contain source files. (These |
| 1034 | ;;; two arguments are used for determining defaults). If MUSTMATCH-P is true, |
| 1035 | ;;; then the filename reader will only accept a file that exists. |
| 1036 | ;;; |
| 1037 | ;;; A typical use: |
| 1038 | ;;; (interactive (comint-get-source "Compile file: " prev-lisp-dir/file |
| 1039 | ;;; '(lisp-mode) t)) |
| 1040 | |
| 1041 | ;;; This is pretty stupid about strings. It decides we're in a string |
| 1042 | ;;; if there's a quote on both sides of point on the current line. |
| 1043 | (defun comint-extract-string () |
| 1044 | "Return string around POINT that starts the current line, or nil." |
| 1045 | (save-excursion |
| 1046 | (let* ((point (point)) |
| 1047 | (bol (progn (beginning-of-line) (point))) |
| 1048 | (eol (progn (end-of-line) (point))) |
| 1049 | (start (progn (goto-char point) |
| 1050 | (and (search-backward "\"" bol t) |
| 1051 | (1+ (point))))) |
| 1052 | (end (progn (goto-char point) |
| 1053 | (and (search-forward "\"" eol t) |
| 1054 | (1- (point)))))) |
| 1055 | (and start end |
| 1056 | (buffer-substring start end))))) |
| 1057 | |
| 1058 | (defun comint-get-source (prompt prev-dir/file source-modes mustmatch-p) |
| 1059 | (let* ((def (comint-source-default prev-dir/file source-modes)) |
| 1060 | (stringfile (comint-extract-string)) |
| 1061 | (sfile-p (and stringfile |
| 1062 | (condition-case () |
| 1063 | (file-exists-p stringfile) |
| 1064 | (error nil)) |
| 1065 | (not (file-directory-p stringfile)))) |
| 1066 | (defdir (if sfile-p (file-name-directory stringfile) |
| 1067 | (car def))) |
| 1068 | (deffile (if sfile-p (file-name-nondirectory stringfile) |
| 1069 | (cdr def))) |
| 1070 | (ans (read-file-name (if deffile (format "%s(default %s) " |
| 1071 | prompt deffile) |
| 1072 | prompt) |
| 1073 | defdir |
| 1074 | (concat defdir deffile) |
| 1075 | mustmatch-p))) |
| 1076 | (list (expand-file-name (substitute-in-file-name ans))))) |
| 1077 | |
| 1078 | ;;; I am somewhat divided on this string-default feature. It seems |
| 1079 | ;;; to violate the principle-of-least-astonishment, in that it makes |
| 1080 | ;;; the default harder to predict, so you actually have to look and see |
| 1081 | ;;; what the default really is before choosing it. This can trip you up. |
| 1082 | ;;; On the other hand, it can be useful, I guess. I would appreciate feedback |
| 1083 | ;;; on this. |
| 1084 | ;;; -Olin |
| 1085 | |
| 1086 | \f |
| 1087 | ;;; Simple process query facility. |
| 1088 | ;;; =========================================================================== |
| 1089 | ;;; This function is for commands that want to send a query to the process |
| 1090 | ;;; and show the response to the user. For example, a command to get the |
| 1091 | ;;; arglist for a Common Lisp function might send a "(arglist 'foo)" query |
| 1092 | ;;; to an inferior Common Lisp process. |
| 1093 | ;;; |
| 1094 | ;;; This simple facility just sends strings to the inferior process and pops |
| 1095 | ;;; up a window for the process buffer so you can see what the process |
| 1096 | ;;; responds with. We don't do anything fancy like try to intercept what the |
| 1097 | ;;; process responds with and put it in a pop-up window or on the message |
| 1098 | ;;; line. We just display the buffer. Low tech. Simple. Works good. |
| 1099 | |
| 1100 | ;;; Send to the inferior process PROC the string STR. Pop-up but do not select |
| 1101 | ;;; a window for the inferior process so that its response can be seen. |
| 1102 | (defun comint-proc-query (proc str) |
| 1103 | (let* ((proc-buf (process-buffer proc)) |
| 1104 | (proc-mark (process-mark proc))) |
| 1105 | (display-buffer proc-buf) |
| 1106 | (set-buffer proc-buf) ; but it's not the selected *window* |
| 1107 | (let ((proc-win (get-buffer-window proc-buf)) |
| 1108 | (proc-pt (marker-position proc-mark))) |
| 1109 | (comint-send-string proc str) ; send the query |
| 1110 | (accept-process-output proc) ; wait for some output |
| 1111 | ;; Try to position the proc window so you can see the answer. |
| 1112 | ;; This is bogus code. If you delete the (sit-for 0), it breaks. |
| 1113 | ;; I don't know why. Wizards invited to improve it. |
| 1114 | (if (not (pos-visible-in-window-p proc-pt proc-win)) |
| 1115 | (let ((opoint (window-point proc-win))) |
| 1116 | (set-window-point proc-win proc-mark) (sit-for 0) |
| 1117 | (if (not (pos-visible-in-window-p opoint proc-win)) |
| 1118 | (push-mark opoint) |
| 1119 | (set-window-point proc-win opoint))))))) |
| 1120 | |
| 1121 | \f |
| 1122 | ;;; Filename completion in a buffer |
| 1123 | ;;; =========================================================================== |
| 1124 | ;;; Useful completion functions, courtesy of the Ergo group. |
| 1125 | |
| 1126 | ;;; Three commands: |
| 1127 | ;;; comint-dynamic-complete Complete filename at point. |
| 1128 | ;;; comint-dynamic-list-completions List completions in help buffer. |
| 1129 | ;;; comint-replace-by-expanded-filename Expand and complete filename at point; |
| 1130 | ;;; replace with expanded/completed name. |
| 1131 | |
| 1132 | ;;; These are not installed in the comint-mode keymap. But they are |
| 1133 | ;;; available for people who want them. Shell-mode installs them: |
| 1134 | ;;; (define-key shell-mode-map "\t" 'comint-dynamic-complete) |
| 1135 | ;;; (define-key shell-mode-map "\M-?" 'comint-dynamic-list-completions))) |
| 1136 | ;;; |
| 1137 | ;;; Commands like this are fine things to put in load hooks if you |
| 1138 | ;;; want them present in specific modes. |
| 1139 | |
| 1140 | |
| 1141 | (defun comint-match-partial-pathname () |
| 1142 | "Return the filename at point, or signal an error." |
| 1143 | (save-excursion |
| 1144 | (if (re-search-backward "[^~/A-Za-z0-9_.$#,=-]" nil 'move) |
| 1145 | (forward-char 1)) |
| 1146 | ;; Anchor the search forwards. |
| 1147 | (if (not (looking-at "[~/A-Za-z0-9_.$#,=-]")) (error "")) |
| 1148 | (re-search-forward "[~/A-Za-z0-9_.$#,=-]+") |
| 1149 | (substitute-in-file-name |
| 1150 | (buffer-substring (match-beginning 0) (match-end 0))))) |
| 1151 | |
| 1152 | |
| 1153 | (defun comint-replace-by-expanded-filename () |
| 1154 | "Expand the filename at point. |
| 1155 | Replace the filename with an expanded, canonicalised, and completed |
| 1156 | replacement. |
| 1157 | \"Expanded\" means environment variables (e.g., $HOME) and ~'s are |
| 1158 | replaced with the corresponding directories. \"Canonicalised\" means .. |
| 1159 | and \. are removed, and the filename is made absolute instead of relative. |
| 1160 | See functions `expand-file-name' and `substitute-in-file-name'. See also |
| 1161 | `comint-dynamic-complete'." |
| 1162 | (interactive) |
| 1163 | (let* ((pathname (comint-match-partial-pathname)) |
| 1164 | (pathdir (file-name-directory pathname)) |
| 1165 | (pathnondir (file-name-nondirectory pathname)) |
| 1166 | (completion (file-name-completion pathnondir |
| 1167 | (or pathdir default-directory)))) |
| 1168 | (cond ((null completion) |
| 1169 | (message "No completions of %s" pathname) |
| 1170 | (ding)) |
| 1171 | ((eql completion t) |
| 1172 | (message "Unique completion")) |
| 1173 | (t ; this means a string was returned. |
| 1174 | (delete-region (match-beginning 0) (match-end 0)) |
| 1175 | (insert (expand-file-name (concat pathdir completion))))))) |
| 1176 | |
| 1177 | |
| 1178 | (defun comint-dynamic-complete () |
| 1179 | "Dynamically complete the filename at point. |
| 1180 | This function is similar to `comint-replace-by-expanded-filename', except |
| 1181 | that it won't change parts of the filename already entered in the buffer; |
| 1182 | it just adds completion characters to the end of the filename." |
| 1183 | (interactive) |
| 1184 | (let* ((pathname (comint-match-partial-pathname)) |
| 1185 | (pathdir (file-name-directory pathname)) |
| 1186 | (pathnondir (file-name-nondirectory pathname)) |
| 1187 | (completion (file-name-completion pathnondir |
| 1188 | (or pathdir default-directory)))) |
| 1189 | (cond ((null completion) |
| 1190 | (message "No completions of %s" pathname) |
| 1191 | (ding)) |
| 1192 | ((eql completion t) |
| 1193 | (message "Unique completion")) |
| 1194 | (t ; this means a string was returned. |
| 1195 | (goto-char (match-end 0)) |
| 1196 | (insert (substring completion (length pathnondir))))))) |
| 1197 | |
| 1198 | (defun comint-dynamic-list-completions () |
| 1199 | "List in help buffer all possible completions of the filename at point." |
| 1200 | (interactive) |
| 1201 | (let* ((pathname (comint-match-partial-pathname)) |
| 1202 | (pathdir (file-name-directory pathname)) |
| 1203 | (pathnondir (file-name-nondirectory pathname)) |
| 1204 | (completions |
| 1205 | (file-name-all-completions pathnondir |
| 1206 | (or pathdir default-directory)))) |
| 1207 | (cond ((null completions) |
| 1208 | (message "No completions of %s" pathname) |
| 1209 | (ding)) |
| 1210 | (t |
| 1211 | (let ((conf (current-window-configuration))) |
| 1212 | (with-output-to-temp-buffer "*Help*" |
| 1213 | (display-completion-list completions)) |
| 1214 | (sit-for 0) |
| 1215 | (message "Hit space to flush") |
| 1216 | (let ((ch (read-event))) |
| 1217 | (if (eq ch ?\ ) |
| 1218 | (set-window-configuration conf) |
| 1219 | (setq unread-command-events (list ch))))))))) |
| 1220 | \f |
| 1221 | ;;; Converting process modes to use comint mode |
| 1222 | ;;; =========================================================================== |
| 1223 | ;;; The code in the Emacs 19 distribution has all been modified to use comint |
| 1224 | ;;; where needed. However, there are `third-party' packages out there that |
| 1225 | ;;; still use the old shell mode. Here's a guide to conversion. |
| 1226 | ;;; |
| 1227 | ;;; Renaming variables |
| 1228 | ;;; Most of the work is renaming variables and functions. These are the common |
| 1229 | ;;; ones: |
| 1230 | ;;; Local variables: |
| 1231 | ;;; last-input-start comint-last-input-start |
| 1232 | ;;; last-input-end comint-last-input-end |
| 1233 | ;;; shell-prompt-pattern comint-prompt-regexp |
| 1234 | ;;; shell-set-directory-error-hook <no equivalent> |
| 1235 | ;;; Miscellaneous: |
| 1236 | ;;; shell-set-directory <unnecessary> |
| 1237 | ;;; shell-mode-map comint-mode-map |
| 1238 | ;;; Commands: |
| 1239 | ;;; shell-send-input comint-send-input |
| 1240 | ;;; shell-send-eof comint-delchar-or-maybe-eof |
| 1241 | ;;; kill-shell-input comint-kill-input |
| 1242 | ;;; interrupt-shell-subjob comint-interrupt-subjob |
| 1243 | ;;; stop-shell-subjob comint-stop-subjob |
| 1244 | ;;; quit-shell-subjob comint-quit-subjob |
| 1245 | ;;; kill-shell-subjob comint-kill-subjob |
| 1246 | ;;; kill-output-from-shell comint-kill-output |
| 1247 | ;;; show-output-from-shell comint-show-output |
| 1248 | ;;; copy-last-shell-input Use comint-previous-input/comint-next-input |
| 1249 | ;;; |
| 1250 | ;;; SHELL-SET-DIRECTORY is gone, its functionality taken over by |
| 1251 | ;;; SHELL-DIRECTORY-TRACKER, the shell mode's comint-input-sentinel. |
| 1252 | ;;; Comint mode does not provide functionality equivalent to |
| 1253 | ;;; shell-set-directory-error-hook; it is gone. |
| 1254 | ;;; |
| 1255 | ;;; comint-last-input-start is provided for modes which want to munge |
| 1256 | ;;; the buffer after input is sent, perhaps because the inferior |
| 1257 | ;;; insists on echoing the input. The LAST-INPUT-START variable in |
| 1258 | ;;; the old shell package was used to implement a history mechanism, |
| 1259 | ;;; but you should think twice before using comint-last-input-start |
| 1260 | ;;; for this; the input history ring often does the job better. |
| 1261 | ;;; |
| 1262 | ;;; If you are implementing some process-in-a-buffer mode, called foo-mode, do |
| 1263 | ;;; *not* create the comint-mode local variables in your foo-mode function. |
| 1264 | ;;; This is not modular. Instead, call comint-mode, and let *it* create the |
| 1265 | ;;; necessary comint-specific local variables. Then create the |
| 1266 | ;;; foo-mode-specific local variables in foo-mode. Set the buffer's keymap to |
| 1267 | ;;; be foo-mode-map, and its mode to be foo-mode. Set the comint-mode hooks |
| 1268 | ;;; (comint-prompt-regexp, comint-input-filter, comint-input-sentinel, |
| 1269 | ;;; comint-get-old-input) that need to be different from the defaults. Call |
| 1270 | ;;; foo-mode-hook, and you're done. Don't run the comint-mode hook yourself; |
| 1271 | ;;; comint-mode will take care of it. The following example, from shell.el, |
| 1272 | ;;; is typical: |
| 1273 | ;;; |
| 1274 | ;;; (defun shell-mode () |
| 1275 | ;;; (interactive) |
| 1276 | ;;; (comint-mode) |
| 1277 | ;;; (setq comint-prompt-regexp shell-prompt-pattern) |
| 1278 | ;;; (setq major-mode 'shell-mode) |
| 1279 | ;;; (setq mode-name "Shell") |
| 1280 | ;;; (cond ((not shell-mode-map) |
| 1281 | ;;; (setq shell-mode-map (full-copy-sparse-keymap comint-mode-map)) |
| 1282 | ;;; (define-key shell-mode-map "\M-\t" 'comint-dynamic-complete) |
| 1283 | ;;; (define-key shell-mode-map "\M-?" |
| 1284 | ;;; 'comint-dynamic-list-completions))) |
| 1285 | ;;; (use-local-map shell-mode-map) |
| 1286 | ;;; (make-local-variable 'shell-directory-stack) |
| 1287 | ;;; (setq shell-directory-stack nil) |
| 1288 | ;;; (setq comint-input-sentinel 'shell-directory-tracker) |
| 1289 | ;;; (run-hooks 'shell-mode-hook)) |
| 1290 | ;;; |
| 1291 | ;;; |
| 1292 | ;;; Note that make-comint is different from make-shell in that it |
| 1293 | ;;; doesn't have a default program argument. If you give make-shell |
| 1294 | ;;; a program name of NIL, it cleverly chooses one of explicit-shell-name, |
| 1295 | ;;; $ESHELL, $SHELL, or /bin/sh. If you give make-comint a program argument |
| 1296 | ;;; of NIL, it barfs. Adjust your code accordingly... |
| 1297 | ;;; |
| 1298 | \f |
| 1299 | ;;; Do the user's customisation... |
| 1300 | |
| 1301 | (defvar comint-load-hook nil |
| 1302 | "This hook is run when comint is loaded in. |
| 1303 | This is a good place to put keybindings.") |
| 1304 | |
| 1305 | (run-hooks 'comint-load-hook) |
| 1306 | |
| 1307 | ;;; Change log: |
| 1308 | ;;; 9/12/89 |
| 1309 | ;;; - Souped up the filename expansion procedures. |
| 1310 | ;;; Doc strings are much clearer and more detailed. |
| 1311 | ;;; Fixed a bug where doing a filename completion when the point |
| 1312 | ;;; was in the middle of the filename instead of at the end would lose. |
| 1313 | ;;; |
| 1314 | ;;; 2/17/90 |
| 1315 | ;;; - Souped up the command history stuff so that text inserted |
| 1316 | ;;; by comint-previous-input-matching is removed by following |
| 1317 | ;;; command history recalls. comint-next/previous-input-matching |
| 1318 | ;;; is now much more smoothly integrated w/the command history stuff. |
| 1319 | ;;; - Added comint-eol-on-send flag and comint-input-sender hook. |
| 1320 | ;;; Comint-input-sender based on code contributed by Jeff Peck |
| 1321 | ;;; (peck@sun.com). |
| 1322 | ;;; |
| 1323 | ;;; 3/13/90 ccm@cmu.cs.edu |
| 1324 | ;;; - Added comint-previous-similar-input for looking up similar inputs. |
| 1325 | ;;; - Added comint-send-and-get-output to allow snarfing input from |
| 1326 | ;;; buffer. |
| 1327 | ;;; - Added the ability to pick up a source file by positioning over |
| 1328 | ;;; a string in comint-get-source. |
| 1329 | ;;; - Added add-hook to make it a little easier for the user to use |
| 1330 | ;;; multiple hooks. |
| 1331 | ;;; |
| 1332 | ;;; 5/22/90 shivers |
| 1333 | ;;; - Moved Chris' multiplexed ipc stuff to comint-ipc.el. |
| 1334 | ;;; - Altered Chris' comint-get-source string feature. The string |
| 1335 | ;;; is only offered as a default if it names an existing file. |
| 1336 | ;;; - Changed comint-exec to directly crank up the process, instead |
| 1337 | ;;; of calling the env program. This made background.el happy. |
| 1338 | ;;; - Added new buffer-local var comint-ptyp. The problem is that |
| 1339 | ;;; the signalling functions don't work as advertised. If you are |
| 1340 | ;;; communicating via pipes, the CURRENT-GROUP arg is supposed to |
| 1341 | ;;; be ignored, but, unfortunately it seems to be the case that you |
| 1342 | ;;; must pass a NIL for this arg in the pipe case. COMINT-PTYP |
| 1343 | ;;; is a flag that tells whether the process is communicating |
| 1344 | ;;; via pipes or a pty. The comint signalling functions use it |
| 1345 | ;;; to determine the necessary CURRENT-GROUP arg value. The bug |
| 1346 | ;;; has been reported to the Gnu folks. |
| 1347 | ;;; - comint-dynamic-complete flushes the help window if you hit space |
| 1348 | ;;; after you execute it. |
| 1349 | ;;; - Added functions comint-send-string, comint-send-region and var |
| 1350 | ;;; comint-input-chunk-size. comint-send-string tries to prevent processes |
| 1351 | ;;; from hanging when you send them long strings by breaking them into |
| 1352 | ;;; chunks and allowing process output between chunks. I got the idea from |
| 1353 | ;;; Eero Simoncelli's Common Lisp package. Note that using |
| 1354 | ;;; comint-send-string means that the process buffer's contents can change |
| 1355 | ;;; during a call! If you depend on process output only happening between |
| 1356 | ;;; toplevel commands, this could be a problem. In such a case, use |
| 1357 | ;;; process-send-string instead. If this is a problem for people, I'd like |
| 1358 | ;;; to hear about it. |
| 1359 | ;;; - Added comint-proc-query as a simple mechanism for commands that |
| 1360 | ;;; want to query an inferior process and display its response. For a |
| 1361 | ;;; typical use, see lisp-show-arglist in cmulisp.el. |
| 1362 | ;;; - Added constant comint-version, which is now "2.01". |
| 1363 | ;;; |
| 1364 | ;;; 6/14/90 shivers |
| 1365 | ;;; - Had comint-update-env defined twice. Removed extra copy. Also |
| 1366 | ;;; renamed mem to be comint-mem, for modularity. The duplication |
| 1367 | ;;; was reported by Michael Meissner. |
| 1368 | ;;; 6/16/90 shivers |
| 1369 | ;;; - Emacs has two different mechanisms for maintaining the process |
| 1370 | ;;; environment, determined at compile time by the MAINTAIN-ENVIRONMENT |
| 1371 | ;;; #define. One uses the process-environment global variable, and |
| 1372 | ;;; one uses a getenv/setenv interface. comint-exec assumed the |
| 1373 | ;;; process-environment interface; it has been generalised (with |
| 1374 | ;;; comint-exec-1) to handle both cases. Pretty bogus. We could, |
| 1375 | ;;; of course, skip all this and just use the etc/env program to |
| 1376 | ;;; handle the environment tweaking, but that obscures process |
| 1377 | ;;; queries that other modules (like background.el) depend on. etc/env |
| 1378 | ;;; is also fairly bogus. This bug, and some of the fix code was |
| 1379 | ;;; reported by Dan Pierson. |
| 1380 | ;;; |
| 1381 | ;;; 9/5/90 shivers |
| 1382 | ;;; - Changed make-variable-buffer-local's to make-local-variable's. |
| 1383 | ;;; This leaves non-comint-mode buffers alone. Stephane Payrard |
| 1384 | ;;; reported the sloppy usage. |
| 1385 | ;;; - You can now go from comint-previous-similar-input to |
| 1386 | ;;; comint-previous-input with no problem. |
| 1387 | ;;; |
| 1388 | ;;; 12/21/90 shivers |
| 1389 | ;;; - Added a condition-case to comint-get-source. Bogus strings |
| 1390 | ;;; beginning with ~ were making the file-exists-p barf. |
| 1391 | ;;; - Added "=" to the set of chars recognised by file completion |
| 1392 | ;;; as constituting a filename. |
| 1393 | ;;; |
| 1394 | ;;; 1/90 shivers |
| 1395 | ;;; These changes comprise release 2.02: |
| 1396 | ;;; - Removed the kill-all-local-variables in comint-mode. This |
| 1397 | ;;; made it impossible for client modes to set things before calling |
| 1398 | ;;; comint-mode. (In particular, it messed up ilisp.el) In general, |
| 1399 | ;;; the client mode should be responsible for a k-a-l-v's. |
| 1400 | ;;; - Fixed comint-match-partial-pathname so that it works in |
| 1401 | ;;; more cases: if the filename begins at the start-of-buffer; |
| 1402 | ;;; if point is on the first char of the filename. Just a question |
| 1403 | ;;; of getting the tricky bits right. |
| 1404 | ;;; - Added a hook, comint-exec-hook that is run each time a process |
| 1405 | ;;; is cranked up. Useful for things like process-kill-without-query. |
| 1406 | ;;; |
| 1407 | ;;; These two were pointed out by tale: |
| 1408 | ;;; - Improved the doc string in comint-send-input a little bit. |
| 1409 | ;;; - Tweaked make-comint to check process status with comint-check-proc |
| 1410 | ;;; instead of equivalent inline code. |
| 1411 | ;;; |
| 1412 | ;;; - Prompt-search history commands have been commented out. I never |
| 1413 | ;;; liked them; I don't think anyone used them. |
| 1414 | ;;; - Made comint-exec-hook a local var, as it should have been. |
| 1415 | ;;; (This way, for instance, you can have shell procs kill-w/o-query, |
| 1416 | ;;; but let Scheme procs be default.) |
| 1417 | ;;; |
| 1418 | ;;; 7/91 Shivers |
| 1419 | ;;; - Souped up comint-read-noecho with an optional argument, STARS. |
| 1420 | ;;; Suggested by mjlx@EAGLE.CNSF.CORNELL.EDU. |
| 1421 | ;;; - Moved comint-previous-input-matching from C-c r to C-M-r. |
| 1422 | ;;; C-c <letter> bindings are reserved for the user. |
| 1423 | ;;; These bindings were done by Jim Blandy. |
| 1424 | ;;; These changes comprise version 2.03. |
| 1425 | |
| 1426 | (provide 'comint) |
| 1427 | |
| 1428 | ;;; comint.el ends here |